Add support for multiple platforms in Docker build

Author: abeckDev

.github/workflows/docker-publish.yml

@@ -51,6 +51,7 @@ jobs:
         with:
           context: .
           push: false
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
@@ -62,6 +63,7 @@ jobs:
         with:
           context: .
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha